Pietropaolo, J., Pietropaolo, P.: Carnivorous plants of the world
Ďurkovič Jaroslav TUZLFF - Katedra fytológie
Biologia plantarum. Vol. 40, no. 3 (1997), p. 418
xcla - ČLÁNKY
https://link.springer.com/content/pdf/10.1023%2FA%3A1001103006020.pdf